NDLI: Effects of hydroxyvalerate contents in thermal degradation kinetic of cellulose acetate propionate/poly(3-hydroxyalkanoates) blends

Content Provider	Springer Nature Link
Author	Souza, Djalma Castillo, Teresa Eligio Rodríguez, Rubén Jésus Sánchez
Copyright Year	2012
Abstract	Thermal stability of polymers is an important parameter that determines the application as well as the processing conditions. The green polymers have shown low thermal stability, such as the polyhydroxyalkanoates (PHAs). The PHAs with different comonomers containing hydroxyvalerate (HV) were studied. It was seen that the green polymer showed a fast thermal degradation process. The addition of the HV comonomer modified this profile and the thermal degradation kinetic. The blend prepared between the PHAs and other polymers can modify the thermal degradation process of the green polymers. In the present study, blends of cellulose acetate propionate and PHAs were prepared, and the thermal degradation kinetics of these blends were evaluated. It was observed that the cellulose acetate propionate (CAP) phase in the blends modified the thermal degradation process and kinetic profile of the PHA phase. In the blends, the thermal stability of the PHAs was slightly modified because of CAP reducing the reactivity of the PHAs. On the other hand, the thermal stability of the CAP phase in the blends is not largely modified by the PHA phase. However, the hydroxyvalerate comonomer decreases the reactivity of the CAP phase at the start of thermal degradation of the same. The interaction between the phases promotes the synergetic interaction, which slightly improves the thermal stability of the two polymers blends.
Starting Page	1353
Ending Page	1364
Page Count	12
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	109
Issue Number	3
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-01-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Thermal degradation kinetic PHB P(HB–HV) CAP Blends Measurement Science and Instrumentation Physical Chemistry Analytical Chemistry Inorganic Chemistry Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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